Tee Emm
23rd Nov 2006, 22:24
Assuming manual throttle take off. My understanding from FCTM and Boeing FCOM is that for take off, the PF (whether he is captain or first officer doing the take off is immaterial) opens the thrust levers to ensure stabilization at 40% N1 Classic or 1.4 EPR on the 737-200 - then he also advances power to take off thrust, at which point the PM adjusts power only when it is already set at take off thrust.
Some operators however share the throttle duties and the PF opens up to stabilised thrust then hands the throttles over to the PNF who pushes them to take off thrust. In other words it differs from Boeing in that the throttle handling is split between the two pilots.
Boeing have no published procedure that requires split pilot duties in this regard. Who ever is handling pilot for take off is entirely responsible for his own throttle opening to take off thrust where the PM then is required to make any minor adjustments before 60 knots.
It seems to me that the danger of one chappie opening the throttles while the other chappie steers the aircraft on take off, is that if its a slippery runway and one engine spools slower than the other there will be hasty grabbing of throttles by the steering pilot who will feel the yaw.
Seems a straightforward Boeing recommended procedure from years of experience at selling aeroplanes is thrown out of the window so that both pilots get into the act - one shoving open throttles while one steers the centre line.
A bit superfluous - no?:=
Some operators however share the throttle duties and the PF opens up to stabilised thrust then hands the throttles over to the PNF who pushes them to take off thrust. In other words it differs from Boeing in that the throttle handling is split between the two pilots.
Boeing have no published procedure that requires split pilot duties in this regard. Who ever is handling pilot for take off is entirely responsible for his own throttle opening to take off thrust where the PM then is required to make any minor adjustments before 60 knots.
It seems to me that the danger of one chappie opening the throttles while the other chappie steers the aircraft on take off, is that if its a slippery runway and one engine spools slower than the other there will be hasty grabbing of throttles by the steering pilot who will feel the yaw.
Seems a straightforward Boeing recommended procedure from years of experience at selling aeroplanes is thrown out of the window so that both pilots get into the act - one shoving open throttles while one steers the centre line.
A bit superfluous - no?:=